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Distribution Network Reliability Evaluation Method Considering Load Characteristics and Distributed Generation Access

A technology of distributed power supply and load characteristics, applied in the field of electric power, can solve the problems that it is difficult to reflect the operating state of the distribution network, and the load characteristics are not considered comprehensively, so as to reduce the amount of simulation calculation and simulation time, improve the prediction results, and simplify the system structure Effect

Active Publication Date: 2021-07-13
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Abstract
  • Description
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Problems solved by technology

[0004] The existing distribution network reliability evaluation method does not consider the load characteristics comprehensively, and it is difficult to reflect the actual operation status of the distribution network, which has limitations.

Method used

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  • Distribution Network Reliability Evaluation Method Considering Load Characteristics and Distributed Generation Access
  • Distribution Network Reliability Evaluation Method Considering Load Characteristics and Distributed Generation Access
  • Distribution Network Reliability Evaluation Method Considering Load Characteristics and Distributed Generation Access

Examples

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Embodiment 1

[0067] Such as figure 1 As shown, the flow chart of the distribution network reliability assessment method considering load characteristics and distributed power access includes the following steps: 1) Read in the connection topology, component parameters and load data of each component in the distribution network system ; 2) The typical daily load curves of four quarters are used to represent the user's load changes throughout the year, and the typical daily load curves are simplified sequentially by using the clustering-segmentation method, and the four categories of residential, commercial, agricultural, and industrial are sequentially obtained The user's load time series characteristic curves in the four seasons of spring, summer, autumn and winter; 3) Merge and simplify the set of components with common entrance components and the same fault effects to form distribution network feeder partitions, calculate the reliability parameters of the feeder area, and according to the...

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Abstract

The invention provides a distribution network reliability evaluation method considering load characteristics and distributed power access, which fully considers different user types and time-series load characteristics in different seasons, so that the evaluation results are more in line with the actual operating conditions of the power grid; At the same time, the island support effect of distributed power access on the distribution network is also considered, so that the scope of application of this evaluation method is wider and it can cope with more diverse power distribution scenarios. The existing distribution network reliability evaluation usually does not consider the timing change of the load, and the peak load is used for simulation, which will inevitably amplify the impact of the fault. However, the present invention considers load characteristics such as load timing characteristics and user types in the reliability evaluation. It can improve the prediction results of the reliability index of the load point and the system, and be closer to the actual value.

Description

technical field [0001] The invention relates to the field of electric power technology, and more specifically, relates to a distribution network reliability evaluation method considering load characteristics and distributed power access. Background technique [0002] The distribution network is the last link between the system and the user. The reliability of the distribution network is one of the important indicators for power supply enterprises to assess the grid structure and reliability management level. Therefore, proposing a set of accurate and effective distribution network reliability evaluation methods is of great significance for improving the user's power consumption experience, finding out the weak links of the distribution network, and guiding the optimization construction and transformation of the distribution system. [0003] Load characteristics have an important impact on the reliability index of distribution network, but in traditional distribution network ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38G06F30/20
CPCG06F30/20H02J3/00H02J3/381H02J3/003H02J3/388H02J2203/20
Inventor 李慧刘昊罗容波曾庆辉章涛李国伟李新王云飞张思寒王俊波吴树鸿马榕嵘刘长江黄兆鹏
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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